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[Microbiologic study of a new disinfectant: decyloxy-3-hydroxy-2-amino-1-propane hydrochloride]
Abstract:
Decominol exhibits bactericidal activity in a concentration of 0.05% (NF T 72-151). This concentration is increased five-fold in the presence of an albumin-yeast extract mixture, and 2.5-fold in the presence of hard water (60 degrees French). At pH 5.0, 0.5% concentration is not bactericidal (NF T 72-171) Fungicidal activity (T 72-201) is weak at 20 degrees and 50 degrees C and the sporicidal tests (T 72-231) establish the lack of sporicidal activity at 10%. Decyloxy-3 hydroxy-2 in 0.2 amino-1 propane hydrochloride to 1.5% concentrations used in a meat-canning factory ensures satisfactory disinfection of correctly cleansed surfaces. It also proves useful for sterilization of circuits where it can be used as an adjunct to the lethal action of heat.
Insights
Decominol demonstrates effective bactericidal activity at 0.05%, though its efficacy is reduced by organic matter and hard water. It lacks fungicidal and sporicidal properties, but is useful for surface disinfection and circuit sterilization.
Area of Science:
- Microbiology
- Antimicrobial Efficacy Testing
Context:
- Evaluation of Decominol, a chemical disinfectant.
- Assessment under various conditions including organic load and water hardness.
- Standardized testing methods (NF T 72-151, T 72-171, T 72-201, T 72-231) were employed.
Purpose:
- To determine the bactericidal, fungicidal, and sporicidal activity of Decominol.
- To establish effective concentrations and conditions for its use.
- To assess its suitability for industrial disinfection applications.
Summary:
- Decominol shows bactericidal activity at 0.05% concentration (NF T 72-151).
- Efficacy is reduced by albumin-yeast extract (5x increase) and hard water (2.5x increase).
- It is not bactericidal at 0.5% and pH 5.0 (NF T 72-171), has weak fungicidal activity (T 72-201), and no sporicidal activity at 10% (T 72-231).
- Concentrations of 0.2% to 1.5% are effective for surface disinfection in meat-canning factories and circuit sterilization.
Impact:
- Provides data on Decominol's antimicrobial spectrum and limitations.
- Informs appropriate use in food processing and industrial settings.
- Highlights its role as an adjunct to heat sterilization in specific applications.